# frozen_string_literal: true
require 'gir_ffi_test_helper'

describe GObject::Closure do
  describe '.new' do
    it 'updates the ref_count of the created object' do
      # Tested on a subclass ...
      c = GObject::RubyClosure.new {}
      c.ref_count.must_equal 1
    end
  end

  describe '#invoke' do
    it 'invokes the closure' do
      a = 0
      c = GObject::RubyClosure.new { a = 2 }
      c2 = GObject::Closure.wrap(c.to_ptr)
      c2.invoke nil, []
      a.must_equal 2
    end

    it 'returns the closure result' do
      c = GObject::RubyClosure.new { 3 }
      c2 = GObject::Closure.wrap(c.to_ptr)
      result = c2.invoke GObject::Value.for_gtype(GObject::TYPE_INT), []
      result.must_equal 3
    end

    it 'passes arguments' do
      a = 0
      c = GObject::RubyClosure.new { |val| a = val }
      c2 = GObject::Closure.wrap(c.to_ptr)
      c2.invoke nil, [5]
      a.must_equal 5
    end
  end
end